Home / 7,090.18-10,631.76-2,928.70

Finding the Fourth Proportional to 7,090.18, 10,631.76 and 2,928.70

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Solution

The fourth proportional to 7,090.18, 10,631.76 and 2,928.70 is: 4,391.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,090.18 : 10,631.76 = 2,928.70 : x
  2. Step 2: Convert to fraction form
    7,090.18/10,631.76 = 2,928.70/x
  3. Step 3: Cross multiply
    7,090.18x = 10,631.76 × 2,928.70
  4. Step 4: Simplify right side
    7,090.18x = 31,137,235.51
  5. Step 5: Solve for x
    x = 31,137,235.51/7,090.18
  6. Step 6: Final answer
    x = 4,391.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.